Dropbolt lock



FIG. 1 is a top, front, and right side perspective view of a dropboltlock showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a top plan view thereof, the bottom being a mirror image ofthat shown.

The ornamental design for a dropbolt lock, as shown and described.